Telephone transmitter support and silencer



Jan. 4, 1949. c, REINHOLD 2,458,199

TELEPHONE TRANSMITTER SUPPORT AND SILENCER Filed April 15, 1947 A TTORNE Y5 Patented Jan. 4, 1949 I TELEPHONE TRANSMITTER SUPPORT AND SILENCER D Albert C.-'Reinli6ld, Marietta, Pa. tat-aria. April 15, 1947, Serial No. 741,614

Claims.

. 1 The present invention more particularly to a novel transmitter support. In telephone instruments as now in general use, the transmitter is open for conversation as soon as removed from the hook or hand setjand the only way to prevent sounds from being transmitted is to hold ones hand over the mouthpiece. It is a common occurrence forthe user of the telephone to lay the instrument on the desk while using the hands to. sort ,out papers or obtain other information, and therefore the transmitter is open to receive side talk not intended for the person at the receiving end of the line. This is highly undesirable, as often information is transmitted thoughtlessly by the user who for the moment overlooks the fact that the transmitter is subject to conversation in proximity to the instrument.

Some of the objects of the present invention are; to provide a novel sound cut-off valve for telephone transmitters; to provide a supporting holder for a telephone instrument which serves to prevent extraneous conversion and noise being transmitted when the instrument is removed from the hook or hand set; to provide a supporting holder for sealing the mouthpiece of a telephone transmitter whenever the instrument is placed on a desk or table so that the hands of the user are free; to provide a novel silencer for telephone transmitters whereby only legitimate conversation will be transmitted to the person at the receiving end of the line; and to provide other improvements as will hereinafter appear.

In the accompanying drawings, Fig. 1 represents a plan of a telephone transmitter closure valve embodying one form of the present invention; Fig. 2 represents a bottom plan of the same; Fig. 3 represents a side elevation of a telephone instrument showing the closure valve in operative position; Fig. 4 represents a plan of a closure valve embodying a modified form of the inven tion; Fig. 5 represents a bottom plan of the modification of Fig. 4; and Fig. 6 represents a side elevation of the modification of Fig. 4.

Referring to the drawing, one form of the present invention comprises a valve disc H3 having a diameter greater than the transmitter unit I! of the type of telephone instrument 12 having the receiving unit 13 at its other end. The face of the disc in is provided with four upstanding stops 54 so spaced apart in pairs as to precisely locate the face of the telephone transmitter within the boundary of the disc I 0 in any one of the four positions determined by the spaced stops l4.

relates to telegraphyand V In order that the valve disc I 0 seals the mouth of the transmitter H, the face of the disc l0 opposite to; the face having the stops I4 is provided with pairs of radially disposed anti-rock lugs I 5, each pair of such lugs I5 being so arranged that whichever pair of stops i4 is engaged by the transmitter, the lugs 15 will counteract any tendency of the valve disc to tilt about the particular disc diameter used, by the transmitter. i

As a means to form a fulcrum to permit the valve disc I 0 to rock to the required angle defined by the face of the transmitter, a coaxially located ring I B is attached to the bottom face of the disc In, such ring l6 having a diameter related to the diameter of the disc so that when rocked to transmitter-supporting position the upper face of the disc l0 will fit tightly against the transmitter face as a seal to prevent any sound from reaching the transmitter. As shown, the ring I6 is preferably as a part of the face of the disc to provide a through hole covered by a magnifying lens, so that the disc may be used for reading or examination purposes.

In the form of the invention shown in Figs. 4 and 5, the valve unit is a one position unit, comprising a segmental disc I! having a straight edge l8 forming a support for the disc when rocked to operative position with a telephone transmitter in place. For holding the transmitter an arcuate rest 20 is provided and supported at its end by two fixed stops IS. The radius of the rest 20 is the same as that of a telephone transmitter so that the latter fits snugly in place.

For supportin the disc H, the bottom face thereof is provided with two parallel, flat elongated legs 2l, each having a horizontal edge 22 and an edge 23 inclined towards the edge l8. Thus, when the valve rests upon the two edges 22 it is substantially horizontal, ready to receive a transmitter, and when the latter is placed thereon the disc rocks rearwardly upon the edges 23 to reach a stable position resting upon the edge I 8 as well. Coaxially of the disc I! there is a through hole 24 closed by a magnifying lens 25.

Having thus described my invention, I claim:

1. As a new article of manufacture, a disc valve, means upon one face thereof to fit said valve over the mouthpiece of a telephone instrument, and means on the opposite face of said disc forming a support for holding said valve in closed position when a telephone instrument rests in part on said disc and in part on the surface supporting said disc.

2. As a new article of manufacture, a disc valve, means upon one face thereof to fit said valve over 3 v the mouthpiece of a telephone instrument, means on the opposite face of said disc forming a support for holding of said valve in closed position when a telephone instrument rests in part upon said disc and in part on the surface supporting said disc, and"in'eans on said disc to prevent lateral rocking of said support relative to the longitudinal axis of saidinstmment.

3. A silencer holder for telephone instruments having a, receiver at one end and a transmitter mouthpiece at the other end, comprising a disc valve tofrest upon a horizontal surface and be fitted against said mouthpiece itorshutofi ambient sound, means adapted to tilt said valve under-the weight of said mouthpiece to seal said mouthpiece, and means coacting withfsaid tilting'means to form a stable support for: said valve :in tilted position while said receiver rests upon the same horizontal surface.

4, A silencer holder for telephone instruments having a receiver at one end and-a transmitter mouthpiece, at the other end comprising adisc valve to rest upon a horizontal surface and *be fitted against said mouthpiece to shut on ambient sound, :a coaxi-al'ly located ring projectin from the bottom of said disc adapted to tilt said disc under the weight of the superposed mouthpiece, and spaced lugs functioning withsaidring as a stable support to hold said valve in closed position. a i

5. A' i'Iencer holder for telephone instruments I mouthpiece centered.

4 having a receiver at one end and a transmitter mouthpiece at the other end comprising a disc valve to rest upon a horizontal surface and be fitted against said mouthpiece to shut ofi ambient sound, a coaxially located ring projecting from the' bottorn of said disc adapted to tilt said disc under the weight of the superposed mouthpiece, .spacedlu s iunctioninglwith said ring as a stable supp t toiuold zsaid valve in closed position, and spaced stops on the valve face to maintain said ALBERT c. REINHOLD.

A REFERENCES CITED Thetinllowing referencesare of record in the iiie of this patent:

UNITED STATES PATENTS Number Name: Date 769,863 Haddock .Sept. 13, 1904 8.313889 Paterson Sept. 25, 1906 950,1365 Plumb Mar. 1, 1910 1398,029 Lee Nov. 22', 1921 "1,697,525 'Sedgwick e Jan. 1, "1929 15101,:883 Haas Feb. 12, 1929 2,138,958 Richardson 'Feb. 6,1940 2320;838 Watson June 1, '1943 PATENSE'S "Number 'Country Date Great Britain Apr. 17, 1930- 

